The Ethereum Foundation co-developed the zkAPI technology alongside the Open Anonymity Project, an open-source AI privacy effort

From the articleEthereum targets AI privacy with zkAPI for anonymous API payments - CryptopolitanAlso in Ethereum Foundation Launches Privacy Tool That Cuts the Link Between AI Prompts and Payers - Unchained, Ethereum Foundation launches zkAPI to let users pay for AI models without revealing identity, Ethereum zkAPI Launches Privacy-Preserving API Payments on Mainnet